1. Manchester Management Company, LLC, a Delaware limited liability company, provides investment management services to private individuals and institutions, including Manchester Explorer, L.P. The reported securities are indirectly beneficially owned by Manchester Management Company, LLC as a result of it having investment discretion over certain advisory accounts it manages. The reported securities may also be deemed to be indirectly beneficially owned by James E. Besser, as a Managing Member of Manchester Management Company, LLC, and by Morgan C. Frank, who serves as a portfolio manager and a consultant of Manchester Management Company, LLC.

2. Each of the Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.